The Waveshare GPM280 is an intriguing device, not least because it looks like the Famicon Edition of the Game Boy Micro. The GPM280 works off a Raspberry Pi Compute Module 3+ Lite, which should make it rather powerful, despite its size.
The GPM280 itself measures 136.4 x 67.5 x 16.82 mm and has a 2.8-inch IPS display. Waveshare states that the display operates natively at 640 x 480 pixels, covers 70% of the NTSC colour gamut and is covered by laminated glass with an anti-fingerprint coating.
Moreover, there are four action buttons, along with a D-pad, two shoulder buttons and select/start buttons. Moreover, Waveshare has included a 3.5 mm headphone jack, a speaker and a volume adjuster. The latter can also adjust screen brightness, which is handy.
A 1,500 mAh battery powers the GPM280, which can be recharged via the device's micro USB port. The latter can also transfer data between the GPM280 and a computer, but the CM3+ Lite includes Wi-Fi connectivity, too. Meanwhile, one can install ROMs on a microSD card.
The GPM280 can be purchased from Waveshare directly, where it retails for US$119.99 without a CM3+ Lite. The company sells the GPM280 with a 32 GB microSD card and the CM3+ Lite too though, albeit it for US$149.99. Alternatively, the GPM280 can be purchased through Waveshare's AliExpress shop.
Source(s)
AliExpress & Waveshare via RetroDodo